6999999999 has 8 divisors (see below), whose sum is σ = 9334292352. Its totient is φ = 4666187160.

The previous prime is 6999999989. The next prime is 7000000001. The reversal of 6999999999 is 9999999996.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6999999999 - 2¹³ = 6999991807 is a prime.

6999999999 is a modest number, since divided by 99999 gives 69999 as remainder.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6999999989) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84307 + ... + 145284.

It is an arithmetic number, because the mean of its divisors is an integer number (1166786544).

Almost surely, 2^6999999999 is an apocalyptic number.

6999999999 is a deficient number, since it is larger than the sum of its proper divisors (2334292353).

6999999999 is a wasteful number, since it uses less digits than its factorization.

6999999999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239757.

The product of its digits is 2324522934, while the sum is 87.

The square root of 6999999999 is about 83666.0026474314. The cubic root of 6999999999 is about 1912.9311826813.

The spelling of 6999999999 in words is "six billion, nine hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred ninety-nine".